choroid plexus


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plexus

 [plek´sus] (pl. plex´us, plexuses) (L.)
a network or tangle, chiefly of veins or nerves; see also rete. adj., adj plex´al.
plexus basila´ris a venous plexus of the dura mater located over the basilar part of the occipital bone and the posterior part of the body of the sphenoid bone, extending from the cavernous sinus to the foramen magnum.
brachial plexus see brachial plexus.
cardiac plexus the plexus around the base of the heart, chiefly in the epicardium, formed by cardiac branches from the vagus nerves and the sympathetic trunks and ganglia, and made up of sympathetic, parasympathetic, and visceral afferent fibers that innervate the heart.
carotid p's nerve plexuses surrounding the common, external, and internal carotid arteries.
celiac plexus solar plexus.
cervical plexus a nerve plexus formed by the ventral branches of the first four cervical spinal nerves and supplying the structures in the region of the neck. One important branch is the phrenic nerve, which supplies the diaphragm.
choroid plexus infoldings of blood vessels of the pia mater covered by a thin coat of ependymal cells that form tufted projections into the third, fourth, and lateral ventricles of the brain; they secrete the cerebrospinal fluid.
coccygeal plexus a nerve plexus formed by the ventral branches of the coccygeal and fifth sacral nerve and by a communication from the fourth sacral nerve, giving off the anococcygeal nerves.
cystic plexus a nerve plexus near the gallbladder.
dental plexus either of two plexuses (inferior and superior) of nerve fibers, one from the inferior alveolar nerve, situated around the roots of the lower teeth, and the other from the superior alveolar nerve, situated around the roots of the upper teeth.
lumbar plexus one formed by the ventral branches of the second to fifth lumbar nerves in the psoas major muscle (the branches of the first lumbar nerve often are included).
lumbosacral plexus the lumbar and sacral plexuses considered together, because of their continuous nature.
lymphatic plexus an interconnecting network of lymph vessels that provides drainage of lymph in a one-way flow. An example is the lymphocapillary vessels, collecting vessels, and trunks.
myenteric plexus a nerve plexus situated in the muscular layers of the intestines.
nerve plexus a plexus composed of intermingled nerve fibers.
pampiniform plexus
1. in the male, a plexus of veins from the testis and the epididymis, constituting part of the spermatic cord.
2. in the female, a plexus of ovarian veins draining the ovary.
sacral plexus a plexus arising from the ventral branches of the last two lumbar and first four sacral spinal nerves.
solar plexus see solar plexus.
tympanic plexus a network of nerve fibers supplying the mucous lining of the tympanum, mastoid air cells, and pharyngotympanic tube.

cho·roid plex·us

[TA]
a vascular proliferation or fringe of the tela choroidea in the third, fourth, and lateral cerebral ventricles; it secretes cerebrospinal fluid, thereby regulating to some degree the intraventricular pressure.

cho·roid plex·us

(kōr'oyd pleks'ŭs) [TA]
A vascular proliferation or fringe of the tela choroidea in the third, fourth, and lateral cerebral ventricles; it secretes cerebrospinal fluid thereby regulating to some degree the intraventricular pressure.

choroid plexus

Pouch-like, blood-vessel-filled projections of the inner layer of the MENINGES, the PIA MATER, into all four ventricles of the brain. Cerebrospinal fluid is continuously formed, mainly by secretion through the thin walls of the choroid plexuses.

choroid plexus

a non-nervous EPITHELIUM which projects into and forms part of the roof of the brain of vertebrates. It secretes the CEREBROSPINAL FLUID.

Choroid plexus

Specialized cells located in the ventricles of the brain that produce cerebrospinal fluid.
Mentioned in: Hydrocephalus
References in periodicals archive ?
These include L-PGDS, which is mainly produced by the leptomeninges, arachnoid membrane, and choroid plexus, (26) while soluble amyloid precursor protein (sAPP) is secreted by neurons.
CPTs are neoplasms derived from the choroid plexus epithelium, usually located in the ventricles.[15] Available clinical data describing therapy and prognosis of CPTs in children have been limited thus far.
Other non-specific cysts like choroid fissural cyst, choroid plexus and ganglioglioma showed no specific metabolite peak.
Owman, "Autonomic nerves in the mammalian choroid plexus and their influence on the formation of cerebrospinal fluid," Journal of Cerebral Blood Flow & Metabolism, vol.
No PEG was detected in the choroid plexus using IHC staining and, in the absence of any adverse findings in these studies, the level of no observed adverse effect in Rowett nude rats was considered to be N8GP 1200 IU/kg, dosed every fourth day.
In fetal brain, we found strong p-mTOR expression in the choroid plexus. The choroid plexus produce cerebrospinal fluid, which functions as a fluid cushion, and has many other functions such as the control of the neural SC migration and a communication between the brain and the rest of the body [27].
Following completion of the third ventriculostomy, endoscopic monopolar cautery was applied to dorsal portion of choroid plexus from foramen of Monro to trigone of the right lateral ventricle without injury to the septal vein, the thalamostriate vein, or the thalamus.
Netsky, "Neuroepithelial (colloid) cysts: pathogenesis and relation to choroid plexus and ependyma," Archives of pathology, vol.
Within the lateral ventricle, NSC-GFP cells were typically adhered to the walls of the ventricle and nestled within the choroid plexus (Figures 5 and S4).